protected internal override Expression VisitForEach(ForEachCSharpStatement node)
{
// NB: The variable is not in scope of the collection. In a LINQ expression tree, the ParameterExpression
// could be reused in several nested scopes, so the same variable could be used within the collection
// expression and bind to a declaration in a surrounding scope.
var collection = Visit(node.Collection);
PushScope(node.Variables);
var res =
node.Update(
VisitEnumeratorInfo(node.EnumeratorInfo),
VisitLabelTarget(node.BreakLabel),
VisitLabelTarget(node.ContinueLabel),
VisitAndConvert(node.Variables, nameof(VisitForEach)),
collection,
VisitAndConvert(node.Conversion, nameof(VisitForEach)),
Visit(node.Body),
VisitAndConvert(node.Deconstruction, nameof(VisitForEach)),
VisitAwaitInfo(node.AwaitInfo)
);
PopScope(node.Variables);
return(res);
}
protected internal override Expression VisitForEach(ForEachCSharpStatement node)
{
// NB: If we do optimizations involving variables, we'll need to track scopes here.
var variable = VisitAndConvert(node.Variable, nameof(VisitForEach));
var collection = Visit(node.Collection);
var conversion = VisitAndConvert(node.Conversion, nameof(VisitForEach));
PushLabelInfo(node);
var body = Visit(node.Body);
PopLabelInfo(out LabelTarget @break, out LabelTarget @continue);
return(node.Update(@break, @continue, variable, collection, conversion, body));
}
protected internal override Expression VisitForEach(ForEachCSharpStatement node)
{
var collection = Visit(node.Collection);
Push(new[] { node.Variable });
var res =
node.Update(
VisitLabelTarget(node.BreakLabel),
VisitLabelTarget(node.ContinueLabel),
VisitAndConvert(node.Variable, nameof(VisitForEach)),
collection,
VisitAndConvert(node.Conversion, nameof(VisitForEach)),
Visit(node.Body)
);
Pop();
return(res);
}
protected internal override Expression VisitForEach(ForEachCSharpStatement node)
{
// NB: If we do optimizations involving variables, we'll need to track scopes here.
var variable = VisitAndConvert(node.Variable, nameof(VisitForEach));
var collection = Visit(node.Collection);
var conversion = VisitAndConvert(node.Conversion, nameof(VisitForEach));
PushLabelInfo(node);
var body = Visit(node.Body);
var @break = default(LabelTarget);
var @continue = default(LabelTarget);
PopLabelInfo(out @break, out @continue);
return node.Update(@break, @continue, variable, collection, conversion, body);
}